German Sweet Chocolate Cake - cooking recipe

Ingredients

1 (4 oz.) pkg. Baker's semi-sweet German's chocolate
1/2 c. boiling water
1 c. butter or margarine
2 c. sugar
4 egg yolks
1 tsp. vanilla
2 1/2 c. sifted Swans Down cake flour
1 tsp. baking soda
1/2 tsp. salt
1 c. buttermilk
4 egg whites, stiffly beaten

Preparation

Melt chocolate in boiling water. Cool.
Cream butter and sugar until fluffy. Add yolks, one at a time, beating well after each. Blend in vanilla and chocolate.